Regarding the investigative powers issue, the police are also victims.

‌Contrary to popular misconception,
investigation is not like an exciting mystery game.
It is a tedious battle of legal principles,
so it is not a popular department within the police force at all..
And contrary to constant misunderstandings,
the police are not primarily an investigative agency;
their character is much more focused on public safety and civil welfare.
Since investigative powers have essentially been handed over to such a police force,
the excessive workload has reached a critical level.
Furthermore, unlike prosecutors, the police are so numerous that they are almost like an entire army;
this makes it difficult to control them nationwide, and there are massive gaps in capability between different regions.
Current officers are expressing concern over how to handle the damages, lawsuits, and media bashing that police will face.
What current officers miss most is the relationship between the police and prosecution during the era when prosecutors held investigative command authority.